Lock.



P. YUKANIS.

LOCK. APPLICATKUN FILED JUNE 2%, 19:1.

Patented Nov. 12, 1918.

UNITED STATES PATENT PAUL'YUKANIS, OF CHICAGO, ILLINOIS.

'- LOCK.

have invented a certain new and useful Improvement in Locks, of which the following ls'a specification.

q 'M invention relates to door locks in general, but more particularly to those for use in conjunction with sliding doors, such as rage .doors, or for any other purpose.

enerally stated, the object of my invention is to provide a novel and comparatively inexpensive form of door lock which can be used on arage doors, or for other phrposes', and w ich can be easi'l varied so that the keys thereof will all be 0 slightly different shapes, whereby the key of one look will not operate any of the other looks, at least so far as a certain number of the locks is concerned, and whereby sliding or other doors maybe provided with locks which will afford ample protection.

- Another object is to provide a lock of this as kind in which inner means are provided for the operation of the look, without using the key, so that should the door of the garage be" closed, after the owner enters, the lock can then be operated from the inside to unlock so the door.

a It is also an object to provide certain details and features of construction and combinations tending to increase the general jefliciency and desirability'of a door lock of this 85 particular construction.

Figure 1 is a horizontal section of a pur To these and other useful ends, my initqtion of a sliding door and the adjacent per-R tion of the door-frame, showing a look therefor embodying the principles of my invention. a

Fig. his an inside elevation of said door and door-frame, and said lock, showing the door-partly open.

Fig. 3 is a front-elevation of said lock, with the outer plate or cover thereof removed, showing the mechanism in position to receive the stationary catch on the doorframe, it being understood that the lockmechanism is secured to the sliding door.

Fig.4 is a view similar to Fig. 3, but

showing the mechanism in the condition thereof necessary for releasing said catch on ner means for unlocking t e doo'r, instead of bythekey.

Fig. 6 is a-vertioal section on line 6-6 in ig. 7. is a side elevation of the-key. Fig. 8 is a lower edge view of one of the plates of the mechanism engaged by the key. As thus illustrated, my invention com-- prises a flat lock-casing A' secured to the tionary catch C on the, stationary door-frame D, the d r-construction being of any suit able or desired character aid catch is prefe bly tapered and provided with a vertioa o ning c to engagejhe mechanism wit in? e casin Whegi applied as shown, the device is in t 0 nature of a rim-lock, but

it will be understood that the inventioncan' be dead in the form of a mortise-lock, or any other form of look, if such is desirable or necessary.

The casing A has its end toward the catch C provided with an opening a to receive said catch, and the mechanism comprises a pair of pivoted jawsE and F which are pivoted to the casing at e and I, which are provided with hook-shaped end-portions 1 and 2'for e agin the opening 0 1n the stationary catc he two jaws are in the nature of a pair of levers, andare provided with pins 3 and 4 at their other ends. A

'plate- G has one end-portion mounted on thepivot f and its other and mounted on the agving its lower edge provided with a flan e ivot 5 of the rocking plate H, said plate G ing, respectively, the pins 3 and 4, so that when the plate H is rocked from the position shown in. Fig. 3 to theposition shown in Fig. 4 the jaws E and F will have their hook-shaped ends 1 and 2 separated. The

plate H is also provided at its lower edge with a cam-portion 8 for engagement with t long lug 9 of the key I, which key is adapted to be inserted through the key-hole 10 in the front plate of the lock and into engagement sliding door B in position to receiyethe Stan Specification of mm; Patent. vPatented 12, 1913, Application lusa mm 21. m1. sci-m In. new.

dock the door.

with the stationar stud 11 on the inner or back plate of the. ock-casing. The shortest lug 12 of the key passes under the flange 1' of the plate G, so that the key can rotate to the position shown in Fig. 4 thereby to un- The unlocking operation causes a separation of the hook-shaped endportions 1 and 2 against the pressure of the springs 13 and 14 which bear against the said aws. The mechanism, however, is selfrctained in the condition shown in Fig. 4,, as when the parts are in these positions the ressure of the cam 8 against the lhg 9 of the Key is in a direction to keep the latter against the stop 15 of the lock-casing. To enable the lug 12 to pass below the plate. G. thev flange g of said plate is provided with a notch 16, and the lower edge of this plate is received by the notclr'il'i in said key. A short late J is placed flatwise against the )late on the pivots f and 5, and this p ate has its lower edge provided with a notch j to receive the notch 18 of said key when the latter is turned in the direction to unlock the 1 nor. A fourth plate. K. for this particular lock, is then placed on the date J. on the pivots f and 5. and this plate has its lower edgeprovided with a notch l' to receive the lug 19 of the key. when the latter is turned to unlock the door.

Of course, the lock will operate without the" Iates G, J and K. and in suchcasc only the u 9 on the .key will be necessary. These additional plates, however. make it more difficult to pick the lock. and necessitate the.

use of a special key. havin the shape shown in Fig. 'i', and the keys 0 other shapes will not operate this particular lock. ()no or more of said plates can be omitted. or additional similar plates can be employed, as

may he desired, necessitating keys of different shapes for the difi'erent'locks.

As thus described, .the lock is operable only from the outside throu h the medium of akcv inserted through t e kev-hole 10. which latter is in alinement with an opening in the door. In order. however, that the lock may be operated from the inside. should the door be-closed after the owner of the garage has entered. the lock-casing A is provided at one end thereof with a movable. section 20 mounted on an arm 21 which is pivoted at 22 inside ofj-the casing. This section 20 is provided with a screw or other engaging portion 23 for en lging the upper end-portion 24 of the plate so that inward pressure of this section, in the manner shown m Fig. 5, will operate the plate H to'unloelt the door. This section 20 is not noticeable, as the exterior of the lm-k-cas'in may be of such character that'this )rovismn will not be obvious and will only e known, for example, to the owner of the garage. A spring I '25 of any suitable character. can be rovided ter normally closed, and when this section: is pushed inward the jaws E and 1" will be separated to release the catch C on the door frame. S rings 26, 27 and 2B are applied. respective y, to the pivots e, f and 5, to hold the parts in place, 1t being understood that the outer ends of these coil springs hear a ainst the front plate ofthe lock-casing. 'lhus sufiicient s 11100 is provided inside of the casing-for the at dition of other plates, similar to the plates J and K, for keys of differ ent shapes, thereby perm tting the necessary variations in the construction of the lock. for the different keys, with very little additional expense. Also, the lock could easily be changed, for a key of a different shape, by substituting difi'erent plates for those shown, whenever this is necessary or desirable.

It will be understood, of course, that the lock-casing A and the catch C can he interchanged so that the catch will he movable and the lock-casi|u stationary. Also, the mechanism can-he applied to divided doors,

the casing A being mounted on one scctionm of the door, and the catch being mounted on the other section of the door, so that the catch and the ltx'k-lneclnmisln will come together when the two sections of the d or are brought together or closed. The. catch is adapted to be forcibly wcdgcdhetwccn the two lunar-portions 1 and when the door is closed. so that these hook-portions will onter the-o )eniug c in said catch. thereby holding the door in locked condition.

What I claim as my invention is I. A door lock comprising a casing having a key-hole, a catch outside the casing. pivoted means inside to engage. said catch, when the catch enters the casing, an oscillating element having cam-engagement with said means, so that operation of said lenient. from normal position disen n'ges said means from said catch. a pivot. or said element, and a key insertihlcthrough said key-hole to operate said element and mcanssaid element having a cam to engage'said key. so that said key and said element-turn in opposite directions when the door is nnlocker said means including a air of gaws pivoted between their ends. an e ement being a plate provided with acau'f-for the rear end 1.142

lot

of each jaw, whereby the aws are separated by pivotal motion of said element to draw said rear ends toward each other, and springs to press said jaws together, said catch being adapted for wedging insertion between said jaws,

3 The structure of claim 1, said means comprising a pair of pivoted members, said element being a plate disposed flativiso against the sides of said members, and one or more stationary plates adjacent said element to determine the shape of said key which plates are mounted on the pivots 0% said element and one of said members.

4. The structure of claim 2, and one or more plates mounted in the front of said element to determine the shape of said key.

5. The structure of claim 1, and a movable device for engaging said element to unlock the door from the inside thereof. said key being insertihle from the outside only.

6. The structure of claim 2, and a device for tilting said element to unlock the door from the inside thereof. said clement llilV- ing a cum to engage said device.

7. A door lock comprising a casing having a key-hole. n catch outside the casing. pivoted means inside to engage said cat h. \vhcn site directions when the door is unlocked the catch enters the casing, an oscillating element having caIii-engagement with sai means, so that operation of said element from normal position disengages said lneafi's from said catch. a pivot forsaid element, and a key insertihle through said ke v-hole to operate said element and means. said element having a cam to engage said key, so that said kc and said element turn in opposaid casing having a movable section for operating said element to unlock the door from the. inside.

8. Thestructure of claim 1, springs to re tain said means in normal position to receive said catch, and means to hold said key in position to retain said means in open position against the action of said springs.

9. A door lock'provided with an outer casing, having an opening in the wall thereof. and a movable SQCtlOfl which fits said opening and which is movable inwardly for operating the lock, and mechanism inside the casing for operation by said movable section to unlock the door from inside.

Signed l1 v me at ('hicago, Illinois. this lfith day of Juneflf l'i.

PAI'L YI KANIS. 

